PHP DOM,仅返回部分文档 [英] PHP DOM and returning only part of document
问题描述
我刚刚发现domdocument,并且以前使用过正则表达式。
I Just discovered domdocument and had previously been using regex..
我需要返回带有所有输入的整个form元素。
I need to return the entire form element with all the inputs.
我不需要创建整个文档,而只需要我可以操纵的字符串即可。我一直在弄乱下面的代码,试图使其变得有用,但到目前为止,什么都没有。
I don't need to create an entire document i just want that part, in a string that I can manipulate. I have been messing with the following chunk of code trying to make it do something useful, but so far, nothing.
在我回到正则表达式之前,有人可以理解吗?
Can anyone make sense of this before I go back to regex?
//get HTML into variable
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, 'https://www.openroadlending.com/Apply.aspx?aid=134');
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$html=curl_exec($curl);
$dom = new domDocument;
@$dom->loadHTML($html);
$dom->preserveWhiteSpace=false;
$xpath = new DOMXPath($dom);
$body = $xpath->query('html/');
echo var_dump($body);
//echo $body->item(0);
$inputs = $xpath->getElementsByTagName('form');
// foreach($inputs as $in){
// $input = $in->saveHTML;
// //echo $input;
// }
推荐答案
您可以使用此函数
function DOMinnerHTML($element)
{
$innerHTML = "";
$children = $element->childNodes;
foreach ($children as $child)
{
$tmp_dom = new DOMDocument();
$tmp_dom->appendChild($tmp_dom->importNode($child, true));
$innerHTML.=trim($tmp_dom->saveHTML());
}
return $innerHTML;
}
并像这样使用
$productspec=$dom->getElementsByTagName('form')
foreach($productspec as $data)
{
echo DOMinnerHTML($data);
}
您可以使用此功能按类获取元素
and You Can Use This function for Get Element By Class
function GetBYClass($Doc,$ClassName){
$finder = new DomXPath($Doc);
return($finder->query("//*[contains(@class, '$ClassName')]"));
}
此功能与此问题无关但有用
and This function Is Not Related To This Question But It Useful
function ExtractText($node) {
if($node==NULL)return false;
if (XML_TEXT_NODE === $node->nodeType || XML_CDATA_SECTION_NODE === $node->nodeType) {
return $node->nodeValue;
} else if (XML_ELEMENT_NODE === $node->nodeType || XML_DOCUMENT_NODE === $node->nodeType || XML_DOCUMENT_FRAG_NODE === $node->nodeType) {
if ('script' === $node->nodeName) return '';
$text = '';
foreach($node->childNodes as $childNode) {
$text .= $this->extractText($childNode);
}
return $text;
}
}
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